#include<iostream>
#include<cmath>
int main()
{
	using namespace std;
	
	double e(double);
	double x, sinh;
	
	cout << "x:";
	cin >> x;
	
	sinh = (e(x) + e(-x)) / 2;
	cout << "sinh(" << x << ")" << sinh << endl;
	return 0;

	int key;
	cin >> key;

}